On Tue, 2013-09-17 at 02:37 +0000, Eric Wong wrote: > Hi, I'd like to compare recording quality of portable recorders. > I only care about the line-in input of these portable recorders. > > I'm thinking: > > * play audio through a good DAC and feed the line-in of each recorder > > * copy audio files off the SD cards from the recorders Sorry, I guess I don't understand ... > * level match the inputs. Probably based on "sox FILE -n stats" > output change input levels on each recorder to match levels. > > * play audio again through the DAC and feed the line-ins ... why you want to do this? Forget what I've written. You seemingly want to test a copy of a copy, while doing some processing. IMO that won't give a valid result. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user